#TransformingNight
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sarabpritchard.bsky.social
I'm on @askhistorians.bsky.social today, answering questions about my brand-new book, #TransformingNight, from @uwapress.uw.edu!
🌌💡🌃🛰️

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September 22, 2026 at 1:13 PM
sarabpritchard.bsky.social
#TransformingNight 🌌💡🌃 🤩

#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice

#envhist #envhum #envjustice #histtech #histsci #sts #Anthropocene
Title page of book proofs, Transforming Night: The History and Science of Light Pollution
February 13, 2026 at 4:33 PM
sarabpritchard.bsky.social
Delighted to share that I'll be on @askhistorians.bsky.social to talk #ArtificialLight #LightPollution #Night #Darkness 🌌💡🌃🛰️ tomorrow, 9/22 -- the day that #TransformingNight drops! 🥳🤩
#envhist #envhum #histtech #histsci #sts #histSTM
September 21, 2026 at 3:28 PM
sarabpritchard.bsky.social
🧵 #TransformingNight
profkelsey.bsky.social Kelsey Johnson @profkelsey.bsky.social · Jul 5
I'm consumed be "externalities" that private companies quietly distribute across humanity for profit while preaching narratives about "progress". Add in "Shifting Baseline Syndrome" and most people don't notice what's happening until it is too late.
Some underlying verifiable facts 👇
✨🔭🧪
Cartoon illustrating satellites crossing the night sky circa 2030, seen from a wilderness area. A child asks, "What is that point of light that doesn't move?"
July 5, 2026 at 4:17 PM
sarabpritchard.bsky.social
The emergence of space-based #LightPollution altered the arc and argument of my forthcoming book, #TransformingNight

#ALAN #ArtificialLight #Darkness #Lightjustice
planet4589.bsky.social Jonathan McDowell @planet4589.bsky.social · Dec 15
The number of active satellites in orbit has now passed the 14000 mark according to my estimates:
December 15, 2025 at 7:11 PM
sarabpritchard.bsky.social
And the vast majority of those 14.5K have been launched since May 2019

#envhist of space
🛰 #TransformingNight
paullecomtephoto.nz Paul Le Comte 🇳🇿🇨🇦📷 @paullecomtephoto.nz · Jul 12
At the turning of the millennium there were 769 satellites in space, 2026 there are 14,500 satellites.

I spent 7mins photographing the Milky Way rising above Poatiri Mt Charles Hoopers Inlet, on Muaupoko (Otago Peninsula) this evening.

Ōtepoti Dunedin, NZ

#Photography
The Milky Way rising above a hill at Hoopers Inlet on Otago Peninsula with crazy lines of satellites in the sky
July 12, 2026 at 11:26 AM
sarabpritchard.bsky.social
Also note shifting metaphors:
From satellite constellations to megaconstellations to fleets
🛰🛰🛰
All #TransformingNight
mattbwarren.bsky.social Matthew Warren @mattbwarren.bsky.social · Jul 1
A disturbing vision of the future night sky: 'Each of the 50,000 reflectors would shine as bright as Venus, the brightest object in the sky after the Moon. In a light-polluted city, hundreds of these bright pinpricks would likely be the only “stars” visible.'

By @danclery.bsky.social
Proposed new satellite fleets could overwhelm the night sky
Orbiting data centers and sunlight reflectors would scupper astronomy by leaving streaks on telescope images and brightening skies, study finds
www.science.org
July 1, 2026 at 3:03 PM
sarabpritchard.bsky.social
#TransformingNight

#ASEH2026
Photo of KansasCity at 615 am Lots of artificial light
March 26, 2026 at 11:17 AM
sarabpritchard.bsky.social
Grateful for all the interest in #TransformingNight 🌌🌃 at #ASEH2026
40% discount + free shipping through April from @uwapress.uw.edu
Cover of uncorrected proofs, Transforming Night: The History and Science of Light Pollution from UW Press
March 29, 2026 at 1:22 AM
sarabpritchard.bsky.social
Autumnal equinox in the northern hemisphere will be in just over an hour.

Nights are about to get longer.

A good time of year to think about the history of #night.

🎂 An appropriate book birth day for #TransformingNight 🌌🌠🌃
September 22, 2026 at 10:53 PM
sarabpritchard.bsky.social
This

🛰 #TransformingNight
July 10, 2026 at 10:40 AM
sarabpritchard.bsky.social
Thanks, Cornell Chronicle, for today's write-up of the book!
#TransformingNight 🌌💡🌃🛰️

#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
news.cornell.edu/stories/2026...
Light pollution’s ‘transformation of night’ requires prompt action | Cornell Chronicle
Science historian Sara B. Pritchard describes a massive spike in the amount of artificial light in the 21st century, with light pollution increasing by nearly 10% annually between 2011 and 2022.
news.cornell.edu
September 22, 2026 at 4:58 PM
sarabpritchard.bsky.social
This all came together faster than I anticipated...
📣🎆🎉🥳 #CoverReveal !

#TransformingNight uwapress.uw.edu/book/9780295...
#LightPollution #ArtificialLight #ALAN #Night #Darkness
November 7, 2025 at 7:00 PM
sarabpritchard.bsky.social
TFW you open the copyedited files of the book ms. A combo of 🤩🤢😁😰
#TransformingNight
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
November 20, 2025 at 8:29 PM
sarabpritchard.bsky.social
It's Aug 1 and US academics everywhere are losing it,

But that means it's book release month!
🎉🥳🌠🍾🥂
#TransformingNight 🌌💡🌃🛰
from @uwapress.uw.edu
Kermit the Frog Dancing on Stage
Alt: Kermit the Frog Dancing on Stage with wild gesticulations
static.klipy.com
August 1, 2026 at 5:07 PM
sarabpritchard.bsky.social
Where to start??? ☄️🛰🌃
#TransformingNight
apod.shinyakato.dev Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · Apr 27
🔭 Comet R3 PanSTARRS Behind Satellite Trails

Image Credit & Copyright: Uli Fehr

ap260427
A night sky filled with lines and dashed-lines appears above a hilly landscape featuring a distant lit-up tower. Near the center of the image is a comet shown by its small green coma and ion tail to the upper right. Please see the explanation for more detailed information.
April 27, 2026 at 10:31 AM
sarabpritchard.bsky.social
Excited my proposal, "Urban #Nightscapes and the #Anthropocene," was accepted! 🌃🌃🌃

Longtime followers will be shocked, shocked to hear that it's abt #LightPollution #ArtificialLight 🤣

#TransformingNight #Night #Darkness
November 9, 2025 at 1:25 PM
sarabpritchard.bsky.social
👀
I. Have. So. Many. Thoughts.

psst #TransformingNight 🌌🌃🛰
theseaning.bsky.social Seán Doran @theseaning.bsky.social · May 6
Earth eclipses the Sun as seen by Artemis II on Orion. Satellites showing off as usual...
May 8, 2026 at 1:32 AM
sarabpritchard.bsky.social
Well, you'd have to wait a while for delivery, but you can preorder my book at 40% off with free domestic shipping with promo code WINTER25! #TransformingNight 🌃🌌💡
#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice

uwapress.uw.edu/book/9780295...
November 18, 2025 at 6:13 PM
sarabpritchard.bsky.social
Much. To. Say. About. This. 🤓
Say a lot in forthcoming #TransformingNight
exploration.esa.int ESA Exploration @exploration.esa.int · Dec 17
💡 Different colours = different lighting technologies.

👀 Compare 2017 vs 2022: artificial light is shifting towards whiter tones.

📸 Cities at Night/@esa.int
December 17, 2025 at 10:45 AM
sarabpritchard.bsky.social
Yet, how have #nightscapes changed since then (1979)? 🌌🌃
#LightPollution #ArtificialLight #ALAN #Night #Darkness #TransformingNight
bluetapes.bsky.social Blue Tapes @bluetapes.bsky.social · Dec 1
Art of the day

Saara Tikka (b.1942) - The Star Counter II. 1979. Gouache.
December 2, 2025 at 11:18 AM
sarabpritchard.bsky.social
SQUEE! #TransformingNight from @uwapress.uw.edu comes out three months from today*!
#ArtificialLight #ALAN #LightPollution #Night #Darkness #LightJustice

uwapress.uw.edu/book/9780295...

*As a former French historian, release date on Bastille Day cracks me up
Transforming Night
Who owns the night—and what is lost as we flood it with light, worldwide?Darkness has become legible—and contested. Blending archival narrative with on-t...
uwapress.uw.edu
April 14, 2026 at 7:49 PM
sarabpritchard.bsky.social
🎉Delighted to share upcoming events associated with the release of #TransformingNight 🌌💡🌃🛰️ from @uwapress.uw.edu

#LightPollution #ArtificialLight #ALAN #Night #Darkness #LightJustice
Image of Transforming Night book cover showing Hong Kong skyline at night plus list of upcoming events: Aug 24 – The Greenhouse Book Talks (virtual) Sept 10 – Ask Me Anything with AskHistorians (virtual) Oct 7-9 – International Conference on Night Studies (virtual) Oct 10 – 4S conference (in person) Nov 2 – Colorado College (in person)
August 14, 2026 at 1:29 PM
sarabpritchard.bsky.social
European colleagues-friends, my book #TransformingNight will easily be available thanks to this UW LUP partnership in July 🌌🎉
lupdistribution.bsky.social Liverpool Distribution Services at Liverpool University Press @lupdistribution.bsky.social · Jan 5
🎉 ✅ New year, new press!
University of Washington Press titles are now available to buy directly from the LUP website.
Browse all UWP has to offer:
bit.ly/4rc68pE
@uwapress.uw.edu
@livunipress.bsky.social
Promotional graphic advertising University of Washington Press titles now being available for direct order through the Liverpool University Press website. The majority of the graphic is a pale teal colour, with a banner at the top with right-positioned white serif text reading 'Now Available'. In the middle of the graphic are multiple different covers of UWP books. At the bottom of the graphic is a banner with the University of Washington graphic in white outline over the teal colour.
January 6, 2026 at 12:52 AM
sarabpritchard.bsky.social
Looking forward to #ESHS-HSS in Edinburgh! My talk will be one of the last talks in the last panels on the last day! WHEE!

If you can't make it (can't blame anyone), here's the flyer for my book, #TransformingNight, w/promo codes for both US & outside-the-US addresses! Thank you, @uwapress.uw.edu!
Press flyer for my forthcoming book, _Transforming Night: The History and Science of Light Pollution_ (out 25 August). It includes a 30% discount and free shipping code for the UW Press website, and a QR code with a discount for orders outside the US. I appreciate any and all orders, and-not-but thank you for buying directly from the press or a local independent bookstore, rather than from the Evil Online Empire.
July 12, 2026 at 7:13 PM